1163533028 has 36 divisors (see below), whose sum is σ = 2373215292. Its totient is φ = 497689920.

The previous prime is 1163533027. The next prime is 1163533037. The reversal of 1163533028 is 8203353611.

It can be written as a sum of positive squares in 2 ways, for example, as 558471424 + 605061604 = 23632^2 + 24598^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1163532985 and 1163533003.

It is not an unprimeable number, because it can be changed into a prime (1163533027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100550 + ... + 111522.

It is an arithmetic number, because the mean of its divisors is an integer number (65922647).

Almost surely, 2^1163533028 is an apocalyptic number.

It is an amenable number.

1163533028 is an abundant number, since it is smaller than the sum of its proper divisors (1209682264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1163533028 is a wasteful number, since it uses less digits than its factorization.

1163533028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11532 (or 11523 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1163533028 is about 34110.5999360902. The cubic root of 1163533028 is about 1051.7832216807.

Adding to 1163533028 its reverse (8203353611), we get a palindrome (9366886639).

The spelling of 1163533028 in words is "one billion, one hundred sixty-three million, five hundred thirty-three thousand, twenty-eight".